Southern Red River Valley, Minnesota, including: all of Norman, Clay, and Wilkin counties, western portions of Mahnomen, Becker, and Otter Tail counties; part of northern Traverse County, and part of northwestern Grant County. This is the area of Minnesota within USGS 1:100,000 scale tile-sheets 1910 (Ada), 2310 (Fargo), and 2710 (Wahpeton).

Users may wish to verify critical information; sources include both the references here and information on file in the offices of the Minnesota Geological Survey and the Department of Natural Resources. Every effort has been made to ensure the interpretation shown conforms to sound geologic and cartographic principles. This map should not be used to establish legal title, boundaries, or locations of improvements.

Contact Person

See Metadata Reference Information, below

Contact Organization

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Contact Person Position

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Contact Address

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Contact City

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Contact State or Province

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Contact Postal Code

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Contact Voice Phone

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Browse Graphic File Name

Browse Graphic File Description

Associated Data Sets

Southern Red River Valley Regional Hydrogeologic Assessment, Part A - Produced by the Minnesota Geological Survey

Section 2

Data Quality Information

Attribute Accuracy

Logical Consistency

Data are topologically correct using ARC/INFO 7.0.3

Completeness

Completed

Horizontal Positional Accuracy

N.A.

Vertical Positional Accuracy

N.A.

Lineage

A 1:200,000 scale manuscript showing County Well Index points and their static water elevation values was created in ARCPLOT, and plotted.

Mike Trojan outlined areas of lateral or upward ground-water flow for ground-water that does not interact directly with the surface, i.e., 'deep' hydrologic regimes. Several factors were used to separate deep from surficial regimes. Deep regimes are those where: a) Tritium is virtually non-existent; b) There is no detectable dissolved oxygen; c) ground-water age suddenly increases (thus defining a vertical point where ground-water flow is primarily horizontal). Chemical information was used to verify the results of the above three methods. Chemical concentrations of major cations and anions differed significantly between deep and surficial systems. (For more detailed information, see Mike Trojan, listed as 'Contact Person,' above) Mike Trojan determined flow direction by subtracting the static water elevation of the uppermost aquifer from the static water elevation in the lowest aquifer. When the static water elevation of the uppermost aquifer is equal to the static water elevation of the lowest aquifer, flow is considered to be 'lateral,' or horizontal. When static water elevation of the uppermost aquifer is less than the static water elevation of the lowest aquifer, flow is considered to be upward.

The manuscript was digitized in ARCEDIT.

Ground-water shed divides from the coverage, 'nor_south' were added to complete the coverage. 'nor_south' represents the three major ground-water sheds of the study area: The North ground-water shed feeds the Wild Rice River, The Central ground-water shed feeds the Buffalo and Otter Tail Rivers, and the South ground-water shed feeds the Rabbit River. (See metadata for the coverage, "nor_south," for more information) The full complement of deep hydrologic regimes are thus a combination of three ground-water sheds and their ground-water flow directions. These six regimes are defined in 'Entity and Attribute Explanation,' below.

Source Scale Denominator

200,000

Section 3

Spatial Data Organization Information

Native Data Set Environment

ARC/INFO

Geographic Reference for Tabular Data

Meters

Spatial Object Type

Vector

Vendor Specific Object Types

Polygons

Tiling Scheme

The area of Minnesota within USGS 1:100,000 scale tile-sheets 1910 (Ada), 2310 (Fargo), and 2710 (Wahpeton).

Section 4

Spatial Reference Information

Horizontal Coordinate Scheme

UTM

Ellipsoid

GRS 1980

Horizontal Datum

NAD83

Horizontal Units

Meters

Altitude Datum

N.A.

Altitude Units

N.A.

Depth Datum

N.A.

Depth Units

N.A.

Cell Width

N.A.

Cell Height

N.A.

Section 5

Entity and Attribute Information

Entity and Attribute Overview

Entity and Attribute Detailed Citation

Table Name

Field Name

Begin Column

Definition

Valid Values

Description

HREGDEEP.PAT

Table description...

Regime

25

2,2,i

Hydrologic regime type.

14

Lateral flow in the North ground-water shed with recharge from areas in eastern Mahnomen County

15

Upward flow in the North ground-water shed with discharge to Red River of the North.

16

Lateral flow in the Central ground-water shed with recharge areas in western Becker County; additional recharge from surficial regimes 1 and 2.

17

Upward flow in the Central ground-water shed with discharge to Red River of the North.

18

Lateral flow in the South ground-water shed with recharge areas in central and southwestern Otter Tail County.

19

Upward flow in the South ground-water shed with discharge to Red River of the North.

Section 6

Distribution Information

Publisher

Minnesota Department of Natural Resources

Publication Date

2000

Online Linkage

Distributor Contact Person

See Metadata Reference Information, below

Distributor Organization

"

Distributor Position

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Distributor Address

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Distributor City

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Distributor State or Province

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Distributor Postal Code

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Distributor

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Distributor's Data Set Identifier

Distribution Liability

This map was prepared from publicly available information only. Every reasonable effort has been made to ensure the accuracy of the factual data on which this map is based. However, the Department of Natural Resources does not warrant the accuracy, completeness, or any implied uses of these data.

Users may wish to verify critical information; sources include both the references here and information on file in the offices of the Minnesota Geological Survey and the Department of Natural Resources. Every effort has been made to ensure the interpretation shown conforms to sound geologic and cartographic principles. This map should not be used to establish legal title, boundaries, or locations of improvements.